Chicken eggs typically take about 21 days to hatch after incubation begins
. The incubation period is generally 20 to 21 days, though some variation can occur depending on factors like flock age, egg storage, and incubation conditions
. Key points about the hatching process include:
- Eggs should be turned several times daily during the first 18 days to prevent the embryo from sticking to the shell. After day 18, turning stops to allow the chick to position itself for hatching
- The temperature during incubation is usually maintained around 99-102°F (37-39°C), with humidity increased to about 65-70% during the last few days to aid hatching
- The chick begins to pip (break the shell) around day 20 or 21, using a temporary "egg tooth" to crack the shell. Hatching can take several hours, sometimes up to 24 hours
- While 21 days is standard, hatching can occur a day or two early or late. If no hatch occurs by day 23, the eggs likely will not hatch
In summary, from setting the eggs in an incubator or under a broody hen, it takes about three weeks for chicken eggs to hatch, with careful management of temperature, humidity, and egg turning essential for success
